Suppose that the height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning. After 6 hours of burning, a candle has a height of 22.8 centimeters. After 24 hours of burning, its height is 19.2 centimeters. What is the height of the candle after 9 hours?

6=22.8

9=x

6x=205.2

x=34.2

2

step-by-step explanation:

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.